Abstract

Observations of eclipses of HW Vir (=BD −7°3477) over a 9-yr baseline show that the period is decreasing. The overall nature of the decrease cannot yet be seen, but we briefly discuss the possible causes and rule out gravitational radiation effects, rotation of the line of apsides and mass transfer. A third body in the system could be the cause of an apparent period change, though this should be observationally testable over a few more seasons. Angular momentum loss via magnetic braking in a modest stellar wind seems the most likely possibility for the period decrease

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.